return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HCNO (fulminic acid)

using model chemistry: HSEh1PBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C*V 1Σ
1 2 yes CS 1A'

Conformer 1 (C*V)

Jump to S1C2
Energy calculated at HSEh1PBE/cc-pVDZ
 hartrees
Energy at 0K-168.415967
Energy at 298.15K 
HF Energy-168.415967
Nuclear repulsion energy60.580595
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HSEh1PBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3547 3412 275.30 24.35 0.26 0.42
2 Σ 2390 2299 362.17 25.67 0.13 0.23
3 Σ 1355 1304 113.00 19.00 0.29 0.45
4 Π 585 563 0.33 0.63 0.75 0.86
4 Π 585 563 0.33 0.63 0.75 0.86
5 Π 159 153 87.79 2.50 0.75 0.86
5 Π 159 153 87.79 2.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4390.4 cm-1
Scaled (by 0.9619) Zero Point Vibrational Energy (zpe) 4223.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HSEh1PBE/cc-pVDZ
B
0.38441

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.178
N2 0.000 0.000 -0.014
C3 0.000 0.000 -1.179
H4 0.000 0.000 -2.248

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.19222.35693.4259
N21.19221.16472.2337
C32.35691.16471.0690
H43.42592.23371.0690

picture of fulminic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C3 180.000 N2 C3 H4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.292      
2 N 0.209      
3 C -0.040      
4 H 0.123      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.925 2.925
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.483 0.000 0.000
y 0.000 -16.483 0.000
z 0.000 0.000 -13.726
Traceless
 xyz
x -1.379 0.000 0.000
y 0.000 -1.379 0.000
z 0.000 0.000 2.757
Polar
3z2-r25.514
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.400 0.000 0.000
y 0.000 1.400 0.000
z 0.000 0.000 5.531


<r2> (average value of r2) Å2
<r2> 34.216
(<r2>)1/2 5.849

Conformer 2 (CS)

Jump to S1C1
Energy calculated at HSEh1PBE/cc-pVDZ
 hartrees
Energy at 0K-168.415969
Energy at 298.15K-168.416433
HF Energy-168.415969
Nuclear repulsion energy60.582406
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HSEh1PBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3546 3411 275.48      
2 A' 2391 2299 362.37      
3 A' 1356 1304 112.90      
4 A' 585 563 0.37      
5 A' 169 162 87.74      
6 A" 555 534 6.40      

Unscaled Zero Point Vibrational Energy (zpe) 4301.0 cm-1
Scaled (by 0.9619) Zero Point Vibrational Energy (zpe) 4137.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HSEh1PBE/cc-pVDZ
B
0.38444

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.002 -1.178 0.000
N2 0.000 0.014 0.000
C3 0.002 1.179 0.000
H4 0.005 2.248 0.000

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.19212.35683.4260
N21.19211.16472.2340
C32.35681.16471.0692
H43.42602.23401.0692

picture of fulminic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C3 179.996 N2 C3 H4 179.932
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.292      
2 N 0.210      
3 C -0.040      
4 H 0.123      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.007 2.925 0.000 2.925
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.483 0.009 0.000
y 0.009 -13.725 0.000
z 0.000 0.000 -16.483
Traceless
 xyz
x -1.379 0.009 0.000
y 0.009 2.759 0.000
z 0.000 0.000 -1.379
Polar
3z2-r2-2.759
x2-y2-2.759
xy0.009
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.400 0.008 0.000
y 0.008 5.532 0.000
z 0.000 0.000 1.400


<r2> (average value of r2) Å2
<r2> 34.215
(<r2>)1/2 5.849